Testing apparatus.



L H.SPENCER.

TESTING APPARATUS.

APPLICATION FILED JAN.I7, 1912.

' 1 1 98,3 9 6 Patented Sept. 12, 1916.

i if 9 Size of tool inlet.

volume of air.

INVENTOR mr mwms FEYERS con Moro-urns" wAsmucrom n. c.

UNITED STATES PATENT OFFICE.

IRA H. SPENCER, OF WEST HARTFORD, CONNECTICUT, ASSIGNOR TO THE SPENCERTURBINE CLEANER COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OFCONNECTICUT.

TESTING APPARATUS.

Application filed January 17, 1912. Serial No. 671,632.

To (all whom it may concern Be it known that I, IRA H. SPENCER, acitizen of the United States, and a resident of Vest Hartford, in thecounty of Hartford and State of Connecticut, have invented a new andImproved Testing Apparatus, of which the following is a specification.

My invention relates to an apparatus of the kind above named and anobject of my invention, among others is to provide such an apparatusespecially designed to show the degree of vacuum that will exist in acleaning apparatus under varying known conditions as to the size ofinlet of the tools in ordinary use and especially to denote this vacuumat the end of the hose to which such tools are attached.

A further object of the invention is to show the volume of air that willpass through any of such tools with a given degree of vacuum; and afurther object of the invention is to provide a simple and effectivedevice for readily determining the conditions above set out.

One form of device embodying my invention and in the construction anduse of which the objects above set out, as well as others, may beattained is illustrated in the accompanying drawings, in which Figure 1is a view in side elevation of a tester embodying my invention. Fig. 2is a view in central longitudinal section through the same. Fig. 3 is adetail View showing a development of the table used in connection withthe index.

In the accompanying drawings the numeral 5 denotes the body of thetester which is of tubular form. preferably cylindrical, with a cap 6secured to and closing one end, this can having a neck 7 with a slot 8,the end of the neck being closed as clearly shown in Fig. 2 of thedrawing.

A piston 9 is fitted to move within the body 5, this piston being of anyordinary construction to prevent the flow of air around it. A hollowextension 10 from the piston is located within the neck 7 and contains aspring 11 secured at one end to the bottom of the well within theextension and the opposite end of the spring being secured to a threadedstud 12 engaging a screw threaded opening in an adjusting nut 13 seatedon the end of the neck 7. The end of the extension 10 is formed into alip constituting an indicator 14, which, acting Patented Sept. 12, 1916.

in connection with the table 15 on the neck, serves to determine thedegree of the vacuum.

The body 5 is preferably of a size to fit closely within the end of ahose or tube to which cleaning tools are commonly attached, and it hasan inlet opening or openings 16, two of such openings being shownherein. A gate 17, preferably in the form of a sleeve and having aseries of ports 18, is mounted on the body to control each of theopenings or series of openings 16. The ports in each gate are ofdiflerent sizes each from another, the area of each being made tocorrespond to the area of an opening in a cleaning tool, the area ofeach port being such that the same amount of air will be admittedtherethrough as through the corresponding tool in operation underordinary conditions of use, so that by causing a certain opening in agate to register with the opening 16 in the body the same amount of airwill pass into the hose as would be supplied thereto by a tool having anopening corresponding to the size of the port in the gate, and thevacuum in the hose will cause the piston to be displaced and thusindicate the amount of vacuum which would be present in the hose with atool of any given size.

By reference to corresponding areas as to the openings in the gate andin cleaning tools, is not necessarily meant that the openings in thegate are of the same area as those in the tools, but that they are suchas to admit the same amount of air as will be admitted to the toolsunder ordinary conditions of use. The tools when placed upon a surfacewill take in a certain amount of air less than would be taken in if thetool were raised a considerable distance from such surface and as thetool is rocked more air will be taken in in some positions than inothers. The holes in the gate are of a size to take in the averageamount of air that will be supplied to the tool during the ordinaryconditions of use and they, therefore, correspond to the effective inletareas of the different tools usable with said tube.

The table 15 is so arranged that in connection with the charactersindicating a given amount of vacuum there will also be indicated theamount of air that with that vacuum will pass through that opening in agiven time, so that the indicator not only indicates the amount ofvacuum present but also the amount of air which is being passed.

My invention provides a simple and inexpensive tool which willaccurately determine the amount of vacuum in a hose with the use oftools of varying size, and while I have shown the preferred form ofconstruction of such a tool, this construction may be departed from to agreater or lesser extent and yet embody the invention.

I claim 1. A pneumatic testing device including a body formed forremovable attachment to atube and having an air inlet opening, a pistonlocated within the body to be moved by the air pressure, means forvarying the area of said opening to areas of definite dimensions tocorrespond to the effective inlet areas of different tools usable withsaid tube, an indicator mounted for operation by the movement of thepiston, and means for mechanically moving the piston in one direction.

2. A pneumatic testing device constituting a complete article ofmanufacture and including a tubular body formed for removable attachmentto a tube and open at one end for insertion in a tube and having an airinlet opening, means for varying the area of said opening to areas ofdefinite dimensions corresponding to the effective inlet areas ofdifferent tools usable with said tube, a piston located within the bodyto be moved by air pressure, means for mechanically forcing the pistonin one direction, and means for determining the amount of movement ofthe piston to denote the density of air passing through the inletopening.

3. A pneumatic testing device constituting a complete article ofmanufacture and including a body formed for removable attachment to atube and having an opening at one end, an air inlet opening into saidbody, a ring mounted upon the outer surface of the body and constructedto vary the area of said inlet opening to areas of definite dimensionscorresponding to the effective inlet areas of different tools usablewith said tube, a piston mounted in the body to be moved by air pressuretherein, means for mechanically moving the piston in one direction, andmeans for determining the amount of movement of the piston to denote thedensity of air passing through the inlet opening.

4. A testing device including a body formed for removable attachment toa tube and having an opening at one end and an inlet opening thereto,aring rotatably mounted upon the outer surface of the body and having anumber of openings of different areas each of an area corresponding tothe effective inlet area of a tool usable with said tube, said openingsbeing positioned to to said body, a piston located within the body andcontrollable by the air pressure therein, means for mechanically forcingthe piston in one direction, and means for determining the amount ofmovement of the piston in the opposite direction.

5. A pneumatic testing device constituting a complete article ofmanufacture and including a body having an opening at one end and aninlet opening, means for varying the size of said inlet opening topredetermined and definite dimensions, a cap removably secured to theother end of the body, a neck extending from said cap, a piston locatedwithin the body and having a tubular extension within said neck, aspring located within said extension and secured to a stationary part ofthe device and to the piston to force the piston in one direction, saidpiston being movable in the opposite direction by air pressure, andmeans for determining the amount of movement of the piston.

6. A testing device constituting a complete article of manufacture andincluding a tubular body formed for removable attachment to a tube andopen at one end and having an inlet opening located in the side wall ofsaid body, agate movably mounted on the body and having a number ofopenings of different sizes and each of an area corresponding with theeffective area of a tool usable with said tube, said openings beingpositioned to fully register one at a time with said inlet opening tovary its size to definite and predetermined dimensions, a piston locatedwithin the body to be moved by air pressure in one direction, means formoving it in the opposite direction, and means connected with the pistonand arranged to determine the amount of movement thereof.

7. A testing device constituting a complete article of manufacture andincluding a tubular body having an open end adapted to be removablyinserted in a hose or like part, said body having an opening through itswall, a piston located within the body to be moved by air pressure inone direction, means for moving it in the opposite direction, a capsecured to close the other end of the body and having a projecting neckWith a slot in its side Wall, a projection from said piston locatedopposite said slot to indicate the position of the piston, and a gaterotatably mounted on the body and having openings of predetermined andvarious sizes located to register one at a time with said inlet opening.

8. A pneumatic testing device including a body formed for removableattachment to a tube and with an opening to communicate with the openingin said tube and an effective inlet opening, means including thebounding Walls of openings of different dimensions adapted, incooperation with the inlet opening to said body, to vary the area ofsaid inlet opening to areas of definite dimensions to correspond withthe effective inlet areas of different tools usable with said tube, andan indicator connected with the device to denote the pressure containedtherein.

9. A pneumatic testing device including a body formed for removableattachment to a. tube and having an air inlet opening therein, a gatemovably mounted upon said body and having a number of openings ofdifier- 'ent dimensions positioned to register with the opening in saidbody to vary the'area of said opening to areas of definite dimensions tocorrespond to the effective inlet areas of different tools usable withsaid tube, and an indicator connected with the device to denote thecondition of the pressure therein.

10. A pneumatic testing device including a body' formed for removableattachment to a tube and with an opening to communicate with the openingin said tube, said body having a chamber therein, a gate movably mountedon said body, one of said parts (body or gate) having an inlet openingand the other of said parts having a number of openings of differentdimensions positioned to register with said inlet openings to vary theeffective area of said inlet opening, and an indicator connected withthe device to denote the condition of the pressure therein.

IRA H. SPENCER. WVitnesses:

ARTHUR B. JENKINS, H. H. RICHARDSON.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents,

Washington, D. 0."

